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Usually denatured alcohol is the best option for these stoves, because they produce blue flames, meaning they burn completely. Ethanol and methanol (HEET) are good fuels, because they also burn completely. Isopropyl alcohol (rubbing alcohol), although it can work, is not recommended since it does not completely burn (has yellow flames), so there is a lot of soot. If you are using isopropyl alcohol, try to use at least 90% or as close to pure as possible, since 70% has a lot of water and can prevent the stove from working.

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